If you want to uninstall the Free Avast Antivirus from your computer then you can uninstall with this step by step guide or visit our website. https://bit.ly/2BIsLvu
Check the unwanted and outdated Avast Free Ativirus (Currently installed program list). Here you can go for Uistall or Chage
Choose the last option Uistall from the following and click on the Continue button.